解析类型时不存在 BigDecimal

Posted 2023-03-08

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【中文标题】解析类型时不存在 BigDecimal【英文标题】：BigDecimal not present when resolving type 【发布时间】：2021-10-21 13:52:06 【问题描述】：

我是通过一些 org.springframework.experimental/graphql-spring-boot-starter 依赖引入的带有 graphql-java-16.2 的 Spring Boot 2.5.4 的“中间位置”。 GraphQL Java 文档建议我可以在我的 Schema 中添加 BigDecimal 内容：https://www.graphql-java.com/documentation/v16/scalars/

...
type TemplateLineItemAction 
    type: String!
    quantity: BigDecimal!

...

运行时要求不同。巨型堆栈跟踪的操作部分是......

...SchemaProblemerrors=[The field type 'BigDecimal' is not present when resolving type 'TemplateLineItemAction' [@5:1]]...

巨大的堆栈跟踪是......

2021-08-19 14:38:34.609 ERROR 85256 --- [  restartedMain] g.springframework.boot.SpringApplication:  Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'routerFunctionMapping' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Invocation of init method failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'graphQlRouterFunction' defined in class path resource [org/springframework/graphql/boot/GraphQlWebMvcAutoConfiguration.class]: Unsatisfied dependency expressed through method 'graphQlRouterFunction' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'graphQlHttpHandler' defined in class path resource [org/springframework/graphql/boot/GraphQlWebMvcAutoConfiguration.class]: Unsatisfied dependency expressed through method 'graphQlHttpHandler' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'webGraphQlHandler' defined in class path resource [org/springframework/graphql/boot/GraphQlWebMvcAutoConfiguration.class]: Unsatisfied dependency expressed through method 'webGraphQlHandler' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'graphQlService' defined in class path resource [org/springframework/graphql/boot/GraphQlServiceAutoConfiguration.class]: Unsatisfied dependency expressed through method 'graphQlService' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'graphQlSource' defined in class path resource [org/springframework/graphql/boot/GraphQlAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.graphql.execution.GraphQlSource]: Factory method 'graphQlSource' threw exception; nested exception is SchemaProblemerrors=[The field type 'BigDecimal' is not present when resolving type 'TemplateLineItemAction' [@5:1]]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1786)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:602)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:944)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:754)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:338)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1343)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1332)
    at aero.blue.ems.boa.Application.main(Application.java:10)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'graphQlRouterFunction' defined in class path resource [org/springframework/graphql/boot/GraphQlWebMvcAutoConfiguration.class]: Unsatisfied dependency expressed through method 'graphQlRouterFunction' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'graphQlHttpHandler' defined in class path resource [org/springframework/graphql/boot/GraphQlWebMvcAutoConfiguration.class]: Unsatisfied dependency expressed through method 'graphQlHttpHandler' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'webGraphQlHandler' defined in class path resource [org/springframework/graphql/boot/GraphQlWebMvcAutoConfiguration.class]: Unsatisfied dependency expressed through method 'webGraphQlHandler' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'graphQlService' defined in class path resource [org/springframework/graphql/boot/GraphQlServiceAutoConfiguration.class]: Unsatisfied dependency expressed through method 'graphQlService' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'graphQlSource' defined in class path resource [org/springframework/graphql/boot/GraphQlAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.graphql.execution.GraphQlSource]: Factory method 'graphQlSource' threw exception; nested exception is SchemaProblemerrors=[The field type 'BigDecimal' is not present when resolving type 'TemplateLineItemAction' [@5:1]]
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:541)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1334)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1177)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:564)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:671)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:659)
    at org.springframework.context.support.AbstractApplicationContext.getBeansOfType(AbstractApplicationContext.java:1300)
    at org.springframework.web.servlet.function.support.RouterFunctionMapping.initRouterFunction(RouterFunctionMapping.java:163)
    at org.springframework.web.servlet.function.support.RouterFunctionMapping.afterPropertiesSet(RouterFunctionMapping.java:138)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1845)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1782)
    ... 21 common frames omitted
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'graphQlHttpHandler' defined in class path resource [org/springframework/graphql/boot/GraphQlWebMvcAutoConfiguration.class]: Unsatisfied dependency expressed through method 'graphQlHttpHandler' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'webGraphQlHandler' defined in class path resource [org/springframework/graphql/boot/GraphQlWebMvcAutoConfiguration.class]: Unsatisfied dependency expressed through method 'webGraphQlHandler' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'graphQlService' defined in class path resource [org/springframework/graphql/boot/GraphQlServiceAutoConfiguration.class]: Unsatisfied dependency expressed through method 'graphQlService' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'graphQlSource' defined in class path resource [org/springframework/graphql/boot/GraphQlAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.graphql.execution.GraphQlSource]: Factory method 'graphQlSource' threw exception; nested exception is SchemaProblemerrors=[The field type 'BigDecimal' is not present when resolving type 'TemplateLineItemAction' [@5:1]]
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:541)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1334)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1177)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:564)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1380)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1300)
    at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:887)
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791)
    ... 37 common frames omitted
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'webGraphQlHandler' defined in class path resource [org/springframework/graphql/boot/GraphQlWebMvcAutoConfiguration.class]: Unsatisfied dependency expressed through method 'webGraphQlHandler' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'graphQlService' defined in class path resource [org/springframework/graphql/boot/GraphQlServiceAutoConfiguration.class]: Unsatisfied dependency expressed through method 'graphQlService' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'graphQlSource' defined in class path resource [org/springframework/graphql/boot/GraphQlAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.graphql.execution.GraphQlSource]: Factory method 'graphQlSource' threw exception; nested exception is SchemaProblemerrors=[The field type 'BigDecimal' is not present when resolving type 'TemplateLineItemAction' [@5:1]]
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:541)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1334)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1177)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:564)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1380)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1300)
    at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:887)
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791)
    ... 51 common frames omitted
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'graphQlService' defined in class path resource [org/springframework/graphql/boot/GraphQlServiceAutoConfiguration.class]: Unsatisfied dependency expressed through method 'graphQlService' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'graphQlSource' defined in class path resource [org/springframework/graphql/boot/GraphQlAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.graphql.execution.GraphQlSource]: Factory method 'graphQlSource' threw exception; nested exception is SchemaProblemerrors=[The field type 'BigDecimal' is not present when resolving type 'TemplateLineItemAction' [@5:1]]
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:541)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1334)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1177)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:564)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1380)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1300)
    at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:887)
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791)
    ... 65 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'graphQlSource' defined in class path resource [org/springframework/graphql/boot/GraphQlAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.graphql.execution.GraphQlSource]: Factory method 'graphQlSource' threw exception; nested exception is SchemaProblemerrors=[The field type 'BigDecimal' is not present when resolving type 'TemplateLineItemAction' [@5:1]]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:658)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:638)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1334)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1177)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:564)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1380)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1300)
    at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:887)
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791)
    ... 79 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.graphql.execution.GraphQlSource]: Factory method 'graphQlSource' threw exception; nested exception is SchemaProblemerrors=[The field type 'BigDecimal' is not present when resolving type 'TemplateLineItemAction' [@5:1]]
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653)
    ... 93 common frames omitted
Caused by: graphql.schema.idl.errors.SchemaProblem: errors=[The field type 'BigDecimal' is not present when resolving type 'TemplateLineItemAction' [@5:1]]
    at graphql.schema.idl.SchemaGenerator.makeExecutableSchema(SchemaGenerator.java:74)
    at graphql.schema.idl.SchemaGenerator.makeExecutableSchema(SchemaGenerator.java:52)
    at org.springframework.graphql.execution.DefaultGraphQlSourceBuilder.build(DefaultGraphQlSourceBuilder.java:109)
    at org.springframework.graphql.boot.GraphQlAutoConfiguration.graphQlSource(GraphQlAutoConfiguration.java:56)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)
    ... 94 common frames omitted

我尝试将scalar BigDecimal 添加到 schema.graphqls 文件中无济于事；相同的堆栈跟踪。

pom.xml 就像...

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.experimental</groupId>
            <artifactId>graphql-spring-boot-starter</artifactId>
            <version>1.0.0-M1</version>
        </dependency>

注意 graphql-spring-boot-starter 启动器来自 Spring (org.springframework.experimental/graphql-spring-boot-starter)，而不是 com.graphql-java/graphiql-spring-boot-starter，这是许多谷歌结果指向我的地方。 BigDecimal 映射应该是 graphql-java-16.2 的一个函数，这真的不重要。但是，谁知道呢？

那个首发带进来了……

[INFO] +- org.springframework.experimental:graphql-spring-boot-starter:jar:1.0.0-M1:compile
[INFO] |  +- org.springframework.graphql:spring-graphql:jar:1.0.0-M1:compile
[INFO] |  +- com.graphql-java:graphql-java:jar:16.2:compile
[INFO] |  |  +- com.graphql-java:java-dataloader:jar:2.2.3:compile
[INFO] |  |  +- org.reactivestreams:reactive-streams:jar:1.0.3:compile
[INFO] |  |  \- org.antlr:antlr4-runtime:jar:4.8:runtime
[INFO] |  +- io.projectreactor:reactor-core:jar:3.4.9:compile
[INFO] |  \- org.springframework:spring-context:jar:5.3.9:compile

我可以看到它有一些 GraphQLScalarType...

    public static final GraphQLScalarType GraphQLBigDecimal = GraphQLScalarType.newScalar()
            .name("BigDecimal").description("Built-in java.math.BigDecimal").coercing(new GraphqlBigDecimalCoercing()).build();

... 以及它可能会在某天移动的一些弃用，但它现在在那里：https://github.com/graphql-java/graphql-java/blob/v16.2/src/main/java/graphql/Scalars.java#L108。我就是不知道怎么用。

我必须在我的 schema.graphqls 文件或项目中做什么才能在我的 GraphQL 类型上使用 BigDecimal？

【问题讨论】：

【参考方案1】：

在 pom.xml 中添加以下依赖项

<dependency>
  <groupId>com.graphql-java</groupId>
  <artifactId>graphql-spring-boot-starter</artifactId>
  <version>5.0.2</version>
</dependency>
<dependency>
  <groupId>com.graphql-java</groupId>
  <artifactId>graphql-java-tools</artifactId>
  <version>5.2.4</version>
</dependency>

<dependency>
  <groupId>com.graphql-java</groupId>
  <artifactId>graphiql-spring-boot-starter</artifactId>
  <version>5.0.2</version>
</dependency>

//修正类型

type TemplateLineItemAction 
    type: String!
    quantity: BigDecimal

【讨论】：

嗯。 org.springframework.experimental/graphql-spring-boot-starter 是 com.graphql-java/graphql-spring-boot-starter 的替代品。因此，如果不踢我已经解决的问题，我就无法真正将其引入。我不认为我能做到这一点。好像某些东西没有“打开” BigDecimal 映射。是的。这确实会与com.graphql-java/graphql-spring-boot-starter 发生冲突。【参考方案2】：

就是这样。我需要将它添加到 RuntimeWiringBuilderCustomizer 的东西...

@Component
public class BoaDataWiring implements RuntimeWiringBuilderCustomizer 
  private final NowService nowService;

  public BoaDataWiring(NowService nowService) 
    this.nowService = nowService;
  

  @Override
  public void customize(RuntimeWiring.Builder builder) 
    /*
     * Declare the scalar here in the RuntimeWiring.Builder
     * Note there remains some ugly deprecation warning...
     *
     * "The is a non standard scalar and is difficult for clients 
     * (such as browser and mobile code) to cope with the exact 
     * semantics. These will be removed in the future version and 
     * moved to another library."
     */
    builder.scalar(Scalars.GraphQLBigDecimal); // <- This is what did it
    builder.type("Query", wiring ->
        wiring.dataFetcher("now", env -> nowService.now()));

2021-08-25 更新：在 https://docs.spring.io/spring-graphql/docs/1.0.0-SNAPSHOT/reference/html/#data-querydsl-customizations 快照上，Spring 已将接口更改为 RuntimeWiringConfigurer。它的工作原理几乎相同......

/**
 * RuntimeWiring provides access to the RuntimeWiring.Builder.
 */
@Component
public class RuntimeWiring implements RuntimeWiringConfigurer 
  private static final Logger LOG = LoggerFactory.getLogger(RuntimeWiring.class);

  @Override
  public void configure(graphql.schema.idl.RuntimeWiring.Builder builder) 
    LOG.trace("configure( builder:  )", builder);
    builder.scalar(Scalars.GRAPHQL_DATE);
    builder.scalar(Scalars.GRAPHQL_BIG_DECIMAL);

还请注意，1.0.0-SNAPSHOT 实际上确实带有 graphql-java v17，它确实删除了 Scalars.GraphQLBigDecimal，因此 Scalars.GRAPHQL_BIG_DECIMAL 是我自己的。

【讨论】：

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